Gadwall vs Mute Swan
Mareca strepera 对比 Cygnus olor
Side-by-Side Comparison
| 属性 | Gadwall | Mute Swan |
|---|---|---|
| 学名 | Mareca strepera | Cygnus olor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | 152.0 cm (59.8 in) |
| 翼展 | 50.3 cm (19.8 in) | 235.0 cm (92.5 in) |
| 体重 | 857.5 g (30.25 oz) | 11000.0 g (388.01 oz) |
| 食性 | Dabbles for seeds and aquatic invertebrates; diet shifts toward invertebrates in spring; forages in shallow … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 产卵数 | 5-15 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Gadwall
Freshwater lakes, reservoirs, marshes, and rivers with emergent vegetation across Eurasia and North America. Winters on large open wetlands and coastal estuaries. Range and population increasing in Europe.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Gadwall
Male utters a soft, nasal nheck note; female produces a series of descending, quacking notes. Both sexes are relatively quiet; female's quacking is softer and less strident than a Mallard.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Gadwall
Found year-round in Australia and New Zealand; nomadic in arid Australia, following temporary rainfall-fed wetlands.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保护状况
Gadwall
Mute Swan
How to Tell Them Apart
Gadwall
Males have finely vermiculated gray-brown plumage with black rump and undertail. White speculum patch diagnostic in flight. Females mottled brown like Mallard but smaller and with orange-sided bill. Subtle but …
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Gadwall
赤膀鸭是北美和欧亚大陆广泛分布的水面鸭，雄鸟羽色低调，以其翼后缘的栗红色翼镜为特征，嘴黑色，腿橙色；雌鸟褐色。繁殖于北温带湖泊和沼泽，越冬于温带至亚热带地区。以水生植物为主食，偶尔取食无脊椎动物。
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.